APA
Gupta R., . (2020). Handbook of Professional English. Chennai: Aadi Publications.
Chicago
Gupta R, . 2020. Handbook of Professional English. Chennai: Aadi Publications.
Harvard
Gupta R., . (2020). Handbook of Professional English. Chennai: Aadi Publications.
MLA
Gupta R, . Handbook of Professional English. Chennai: Aadi Publications. 2020.